1.1 本试验方法涵盖气态烃和液化石油气中总挥发性硫的测定。它适用于天然、加工和最终产品材料的分析。测定了气态碳氢化合物中硫的精度，范围为1 mg/kg至100 mg/kg，对于低压气体中的硫，范围为1 毫克/千克至196 毫克/千克( 注1 ). 注1: ASTM研究报告中可参考汇总定量限（PLOQ）估计值、样品稳定性信息和其他从实验室间精度研究中获得的一般信息。 2. , 3. 1.2 本试验方法可能无法检测在试验条件下不会蒸发的含硫化合物。 1.3 本试验方法适用于含量小于0.35的低压气体中总挥发性硫的测定 % （质量/质量）卤素。 1.4 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 看见 3.1 和剖面图 6. 和 7. 具体警告声明。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 用作燃料的液化石油气的硫含量会导致SOx排放，并可能导致发动机和排气系统腐蚀。某些用于石油和化工精炼的工艺催化剂可能会被原料中的含硫物质中毒。 该试验方法可用于测定过程饲料中的硫，测量成品中的硫，也可用于监管机构可接受的合规性测定。

1.1 This test method covers the determination of total volatile sulfur in gaseous hydrocarbons and liquefied petroleum (LP) gases. It is applicable to analysis of natural, processed, and final product materials. Precision has been determined for sulfur in gaseous hydrocarbons in the range of 1 mg/kg to 100 mg/kg and for sulfur in LP gases in the range of 1 mg/kg to 196 mg/kg ( Note 1 ). Note 1: An estimate of pooled limit of quantification (PLOQ), information regarding sample stability and other general information derived from the interlaboratory studies on precision can be referenced in the ASTM research reports. 2 , 3 1.2 This test method may not detect sulfur compounds that do not vaporize under the conditions of the test. 1.3 This test method is applicable for total volatile sulfur determination in LP gases containing less than 0.35 % (mass/mass) halogen(s). 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. See 3.1 and Sections 6 and 7 for specific warning statements. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 The sulfur content of LPG, used for fuel purposes, contributes to SOx emissions and can lead to corrosion in engine and exhaust systems. Some process catalysts used in petroleum and chemical refining can be poisoned by sulfur bearing materials in the feed stocks. This test method can be used to determine sulfur in process feeds, to measure sulfur in finished products, and can also be used for compliance determinations when acceptable to a regulatory authority.